For those of you with access to a decent 'scope, here are some good websites that should help you get an idea of the concepts involved in doing a fecal sample yourself.
http://www.microscope-microscope.org/ap ... alysis.htm
While the animals on which the fecals are being run are different, the process and concepts are universal. Further, the genera of parasites that are of consequence tend to be readily identified by researching the appropriate texts. However, you can get a pretty good overview from some of the excellent pics available on many websites. With that info, almost anyone should be able to at least point their vet in the right direction, especially if they have a copy of the coveted amphibian husbandry book that keeps popping up.
If you have a large collection, or just a proclivity to enjoy microbiology, there is no reason why you shouldn't be able to plunk down the money to buy a decent 'scope and do your own fecals. Once you've done 10, you've paid for your scope.
I'm just curious as to how many other froggers out there do their own fecals? Give a shout out!